Driving and controlling mechanism



Nov. 22, 1927. 1,650,197

J. DERRY DRIVING AND CONTROLLING MECHANISM Filed Oct. 20. 1924 3 Sheets-Sheet 1 INVEN+EIY Nov. 22, 1927.

1,650,197 J. DERRY DRIVING AND CONTROLLING MECHANISM Filed 001:. 20. 1924 5 Sheets-Sheet 3 q FIFIL 1 III I 3.9 "ll Patented Nov.

,UNITED STATES rATENroFFicE.

' JASPER DERBY,

This invention controlling the connection of a machine with er, and has for its ob ect its source of pow OF MELDFOBD, MASSACHUSETTS, ASSIGNOR TO AIIDREW'TERK'ELSEN.

4 01F BOSTON, MASSACHUSETTS.

DRIVING AND CONTROLLING MECHANISM.

Application filed October 20, 1924. Serial No. 744,861. it

relates to mechanism for to provide simple and effective means where- 5 by a self-contained power unit, such as an electric or other motor, may be readily moved into and out of supported in such out attention on driving engagement with may be driving engagement the part of the operator,

but may be readily disengaged quickly and w1th a minimum effort. I

The more particular ob ects of the inventlon, together with means whereby the latter may be carried int stood poses merely, and

from the following form and application thereof the accompanying drawings. derstood, however, that the struction and arrangement shown have been chosen for illustrative pur- 0 effect, will best be underdescription of one illustrated in It will be unthatthe invention, as do fined by the claims hereunto appended, may

be otherwise embodied parture from the spirit and scope thereof.

In said drawings: Fig. 1 1s a slde elevation,

Fig. 2 a front elevation, and Fig. 3 a plan view of a wrapping machine having the invention applied thereto.

The machine herein shown the purpose of spirally wrapping automobile tire shoes with a paper. As shown, comprises a bracket 20 adapted to be secure is designed for helically wound strip of the frame of the machine in projecting position to the edge of a bench or table (not shown) and an open portion 21 having set of rollers 22, 23, ably supporting an shuttle is interrupted by an opening or gap 28 adapted to register with the open top 0 shown in Fig. of the tire its uppermost portion centhe yoke, as mit insertion supported, with tered with respect of a pair of work which said tire is resting by gravity the tire and carried by an arm 18 pivoted to the bracket 20. The rollers 29 are carrie shafts 30 journalled in suitable bearings including-a yoke top and a circular 24, 25 and 26for rotatannular shuttle 27 Said 1, in order to per- W. Said tire is to the shuttle 27, by means supporting rollers 29 upon held by an idler roller .19 upon the lower portion 0 in the frame 20 and connected by worm gearing 31. with a sha ft 32, also journalled in a with particular condescribed andand used without de I 1s peripherally engaged and form of a friction pinion suitable bearing in the frame and carrying 1 the shuttle. supporting roller 25. The shuttle 27 and work supporting rollers 29 are therefore connected for simultaneous rotation in synchronism, th-earrangement being such that the tire V is turned-relatively slowly with respect to the speed of rotation of the shuttle 27. The wrapping material, in the form of a continuous strip S of paper, is supplied from a roll 33 rotatablysupporb ed 'on the yoke 21 and whose rotation is resisted to. apply tension to the strip by means of a friction brake 3d. From the roll 33 the strip S passes to the tire V over a folding device which folds under the BX- posed edge of the strip. The rollers 25 and 26 are engaged and rotatedv in unison by a friction gear or disk 36 rotatably supported on the frame 20 and to which power is applied by the mechanism to which the in shown is as follows The friction disk 36, whichconstitutes the driven member or gear of the mechanism,

rotatedby a cooperating driving member or gear in the 37 on the armature shaft 38of an electric motor 85X The motor 39 is supported by a base or platform 40. one edge of which is pivoted at 4L1 to the frame 20, said base or platform being movable on its pivot 40 to raise or lower the motor 39, thereby frictionally engaging'the pinion 37 withthe gear 36 anddisengaging the same d therefrom. For so moving the base or plat- I form 40, there is pivotally connected thereto, at apoint 42 eccentrioto the pivot 41, one end of a lever 43 having its opposite end extended to the front of the machine and provided with a handle 47 by'which it may be manually operated. Adjacent its pivoted f end the lever is provided with a movable fulm Of an. butmen crum, member in the screw 44 in threaded engagement with" said lever and locked in adjusted position by a lock nut 45, the end of said screw engaging and being movable over a fixed abutment in the form ofa shelf or ledge 46 projecting f laterally from the bracket 20.

In operation, when the parts are in the disd engaged position shown in full lines in Fig.

order to engage the pinion 37 with the 36 and start the machine,

the handle 17 and moves 1, in gear grasps the lever 43 the operator downwardly about its pivot 42. The fulcrum screw 44 is therefore caused to move rearwardly over the shelf or abutment 46 into the position shown in dotted lines, the rear end of the lever 48 being consequently forced upwardly, carrying with it the base or platform and the motor 39, and moving the pinion 37 into driving engagement with the disk 36. The movement of the fulcrum screw 44 over the abutment 46 causes the point of engagement of said screw with said abutment to be brought into a position substantially vertically under the pivot 42, or into a position of dead center, so that the motor will be supported in driving position Without further attention on the part of the operator, who may release the handle 47 In order to disconnect the pinion 37 from the disk 36 and stop the machine, the operator need only liftthe handle 47 a suii'icient amount to carry the end of the screw 44 out of vertical alignment with the pivot 42, whereupon the parts will be returned to the position shown in full lines'by gravity. The downward movement of the motor may, if desired, be limited by any suitable means, as by a stud 48 carried by a rearward eXtension 49 on the lever 43, which stud engages the shelf or ledge 46 at the rear of the pivot It will be observed that the lever 43 and fulcrum screw 44 provide means whereby a relatively small force applied to the handle 47 results in the application of a greatly in creased lifting force to the motor base 40, so that the weight of the motor may be lifted with slight effort on the part of the operator. It will also be seen that this effort may be discontinued as soon as the point of engagement of the screw 44 with the abutment 46 is brought vertically below the pivot 42, at which time the weight of the motor is supported entirely by said abutment. The maximum elevation to which the motor can be lifted by the lever 43, and consequently the pressure with which the pinion 37 may be engaged with the disk 36 and the amount of power which may be transmitted through the friction gearing to the machine, is determined by the adjustment of the screw 44 and,

having been once provided for by such adjustment, need not be considered by the operator in hissubsequent manipulation of the handle 4".

Having thus described my invention, 1 claim:

1. The combination of a supporting abutment, a driven member, a movably supported motor having a driving member, a lever motor being movably supported to permit said driving member to engage and disengage said driven member, and means for moving said motor comprising a lever having a pivotal connection therewith, a fixed abutment, and a fulcrum member adjustably carried by said lever and movable over said abutment as said lever is swung upon its pivotal connection with said motor..

3. The combination with a driven gear, of a motor having a cooperating driving gear, a pivoted base by which said motor is supported, said base being vertically movable, on its pivot, to raise and lower said motor and thereby engage and disengagesaid gears, a lever pivoted to said base, a fixed abutment, and an abutment screw adjustably carried by said lever and movableover said fixed abutment into and out of vertical alinement with the pivot connecting said lever and base as said lever is swung about the latter pivot to raise and lower said mot-or respectively. 7

4. The combination of a driven rotary member, a driving member therefor, a pivoted frame for supporting said last member, a swinging lever extending beneath said frame and supporting the same at one point on the lever and adapted tobe swung to engage said members, a downwardly extending fulcrum carried by said lever be- 7 tween said point of support and the operating end of the lever, said fulcrum upon swinging the lever to raise said frame being movable into predetermined position beneath said in position.

In testimony whereof I afiix my: signature.

JASPER DERBY.

pointof support to vlock the lever 

